Home / 280,055.64-420,083.56-69,693.58

Finding the Fourth Proportional to 280,055.64, 420,083.56 and 69,693.58

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Solution

The fourth proportional to 280,055.64, 420,083.56 and 69,693.58 is: 104,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,055.64 : 420,083.56 = 69,693.58 : x
  2. Step 2: Convert to fraction form
    280,055.64/420,083.56 = 69,693.58/x
  3. Step 3: Cross multiply
    280,055.64x = 420,083.56 × 69,693.58
  4. Step 4: Simplify right side
    280,055.64x = 29,277,127,195.54
  5. Step 5: Solve for x
    x = 29,277,127,195.54/280,055.64
  6. Step 6: Final answer
    x = 104,540.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.